he's the 18th pedestrians to die this year in san francisco. the district attorney has a plan to prevent more tragedies. >> this is scary that the intersection. >>reporter: crossing market and beall street is the risky thing she does every day on her motor wheelchair. >> cars will come through here too fast. and cars making the right hand turn try to turn really fast and go in between the pedestrians walking. >>reporter: today a man in his 40's was struck and killed while crossing beall street just before rush hour. the driver of the pick up that hit him stopped after the collisio collision. >> he is cooperating with law enforcement and we are going, dependent upon what happened witness statements and any surveillance video. >>reporter: mary license witnessed the accident. she says it didn't have to happen. >> we are always rushing about for the holidays. i'm always trying to encourage people to slow down be present be safe. >>reporter: ironically district attorney george kicked off a safety campaign just hours before the accident. it's called